perf: Fix parsing of __print_flags() in TP_printk()

commit d06c27b22aa66e48e32f03f9387328a9af9b0625 upstream.

A update is made to the sched:sched_switch event that adds some
logic to the first parameter of the __print_flags() that shows the
state of tasks. This change cause perf to fail parsing the flags.

A simple fix is needed to have the parser be able to process ops
within the argument.

Reported-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 0a7ed5b5e281c88b321de87ced66a3d29ebb003d..6c164dc9ee957dbf3df642f712b2fdc1485d2dc6 100644 (file)
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1537,6 +1537,8 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
        field = malloc_or_die(sizeof(*field));
 
        type = process_arg(event, field, &token);
+       while (type == EVENT_OP)
+               type = process_op(event, field, &token);
        if (test_type_token(type, token, EVENT_DELIM, ","))
                goto out_free;